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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Björn Schießle <bjoern@schiessle.org>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Maxence Lange <maxence@artificial-owl.com>
* @author Robin Appelman <robin@icewind.nl>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <vincent@nextcloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\DAV\Connector;
use OC\Security\Bruteforce\Throttler;
use OCP\IRequest;
use OCP\ISession;
use OCP\Share\Exceptions\ShareNotFound;
use OCP\Share\IManager;
use OCP\Share\IShare;
use Sabre\DAV\Auth\Backend\AbstractBasic;
/**
* Class PublicAuth
*
* @package OCA\DAV\Connector
*/
class PublicAuth extends AbstractBasic {
private const BRUTEFORCE_ACTION = 'public_webdav_auth';
private ?IShare $share = null;
private IManager $shareManager;
private ISession $session;
private IRequest $request;
private Throttler $throttler;
public function __construct(IRequest $request,
IManager $shareManager,
ISession $session,
Throttler $throttler) {
$this->request = $request;
$this->shareManager = $shareManager;
$this->session = $session;
$this->throttler = $throttler;
// setup realm
$defaults = new \OCP\Defaults();
$this->realm = $defaults->getName();
}
/**
* Validates a username and password
*
* This method should return true or false depending on if login
* succeeded.
*
* @param string $username
* @param string $password
* @return bool
* @throws \Sabre\DAV\Exception\NotAuthenticated
*/
protected function validateUserPass($username, $password) {
$this->throttler->sleepDelayOrThrowOnMax($this->request->getRemoteAddress(), self::BRUTEFORCE_ACTION);
try {
$share = $this->shareManager->getShareByToken($username);
} catch (ShareNotFound $e) {
$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
return false;
}
$this->share = $share;
\OC_User::setIncognitoMode(true);
// check if the share is password protected
if ($share->getPassword() !== null) {
if ($share->getShareType() === IShare::TYPE_LINK
|| $share->getShareType() === IShare::TYPE_EMAIL
|| $share->getShareType() === IShare::TYPE_CIRCLE) {
if ($this->shareManager->checkPassword($share, $password)) {
return true;
} elseif ($this->session->exists('public_link_authenticated')
&& $this->session->get('public_link_authenticated') === (string)$share->getId()) {
return true;
} else {
if (in_array('XMLHttpRequest', explode(',', $this->request->getHeader('X-Requested-With')))) {
// do not re-authenticate over ajax, use dummy auth name to prevent browser popup
http_response_code(401);
header('WWW-Authenticate: DummyBasic realm="' . $this->realm . '"');
throw new \Sabre\DAV\Exception\NotAuthenticated('Cannot authenticate over ajax calls');
}
$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
return false;
}
} elseif ($share->getShareType() === IShare::TYPE_REMOTE) {
return true;
} else {
$this->throttler->registerAttempt(self::BRUTEFORCE_ACTION, $this->request->getRemoteAddress());
return false;
}
}
return true;
}
public function getShare(): IShare {
assert($this->share !== null);
return $this->share;
}
}
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